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.Dd December 19, 2022
.Dt ISIDEOGRAM 3
.Os
.Sh NAME
.Nm isideogram ,
.Nm isideogram_l
.Nd ideographic character test
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In ctype.h
.Ft int
.Fn isideogram "int c"
.Ft int
.Fn isideogram_l "int c" "locale_t loc"
.Sh DESCRIPTION
The
.Fn isideogram
and
.Fn isideogram_l
functions test for an ideographic character.
.Pp
The
.Fn isideogram_l
function takes an explicit locale argument, whereas the
.Fn isideogram
function use the current global or per-thread locale.
.Sh RETURN VALUES
The
.Fn isideogram
and
.Fn isideogram_l
functions return zero if the character tests false and
return non-zero if the character tests true.
.Sh COMPATIBILITY
The
.Bx 4.4
extension of accepting arguments outside of the range of the
.Vt "unsigned char"
type in locales with large character sets is considered obsolete
and may not be supported in future releases.
The
.Fn iswideogram
or
.Fn iswideogram_l
function should be used instead.
.Sh SEE ALSO
.Xr ctype 3 ,
.Xr ctype_l 3 ,
.Xr isphonogram 3 ,
.Xr isphonogram_l 3 ,
.Xr iswideogram 3 ,
.Xr iswideogram_l 3 ,
.Xr xlocale 3
.Sh HISTORY
The
.Fn isideogram
function appeared in
.Bx 4.4 .
